Seiko 9R31 Movement Details

Seiko caliber 9R31 is a high grade Spring Drive (hand winding) watch movement. Production started around 2019.
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Sub-brands: Grand Seiko
Power reserve:72 hours
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Chronograph?No
Rate:32,768 Hz
Number of jewels:30
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